Edging and joint plate for concrete pavements



(No Model.)

J. O. HOYT.

EDGING AND JOINT PLATE FOR CONCRETE PAVEMENTS.

No. 368,398. Patented Aug. 16, 1887.

WITNESSES gNVBNTOR: 3% I ATTORNEYS.

n. PETERS. Pholo-Lnnngnpher, wnmn m. n. c.

UNITED STATES PATENT OFFICE.

JOHN G. HOYT, OF SEDALIA, MISSOURI.

EDGING AND JOINT PLATE FOR CONCRETE PAVEMENTS.

SPECIFICATION forming part of Letters Patent No. 368,398, dated August16, 1887.

Application filed December 3,1886. Serial No. 220,578. (No model.)

To all whom it may concern:

Be it known that I, JOHN G. HOYT, of Sedalia, in the county of Pettisand State of Missouri, have invented new and Improved Edging and JointPlates for Concrete Pavements, of which the following is a full, clear,and exact description.

My invention relates to concrete pavements, and particularly to edgingand joint plates of simple inexpensive construction, which,whenintersected, form molds, into which concrete or cement is placed andhardens.

The invention includes the special construction of the joint-plates andtheir fastenings, and also the combination of the plates and concrete toform an easily-laid, cheap, and substantial Walk adapted alike forprivate grounds or thoroughfares, all as hereinafter fully described andclaimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a perspective view of a part of a concrete-pavement walk incourse of laying by the aid of my improved edging and joint plates. Fig.2is a perspective view, in larger size, of parts of twolongitudinally-ranging edging-plates and a cross-plate connectedthereto; and Fig. 3 is a plan View of parts of two of the edging-platesat the joint between them.

The edging and joint plates A are made of three pieces or strips, B O D,of pasteboard, which are glued or cemented or otherwise fastenedtogether, so that the center strip, 0, projects some little distanceabove the two outer strips, B D, and these outer strips project belowthe bottom edge of the center strip at b d, as clearly shown in Fig. 2of the drawings.

In laying a cement pavement formed of square or rectangular blocks, asshown in Fig. 1 of the drawings, the longi'tudinally-ranging edging andjoint plates A will be spaced apart a distance equaling the desiredwidth of the concrete blocks, and the transversely-rangingjoint-plates,which, for convenience of description, I designate by theletter A, will be spaced apart between the plates A a distance equalingthe desired length of the concrete blocks to be formed.

At the joints between the ends of the short plates A and the long platesA, I connect the plates by means of wire clips E, which are formed bypassing a piece of wire through the plates A near its opposite ends andabout at the vertical center of the overlapped portions of the parts B OD of thejoint-plates, and the end parts ofthe clip-wires are then bentagainst the opposite faces of the plates, and arethen twisted togetherat the ends of the plates, and after the ends of the wires are passedthrough holes a in the longitudinally-ranging jointplates A said ends ee are bent over onto the outer faces of the plates A, as shown in Figs.2 and 3 of the drawings. The clips E thus make substantial connectionsto hold the edging and joint plates together to form a skeleton frame orstructure, providing spaces or molds F between them, and into whichcement or concrete G will be poured or placed to form concrete blocks orflags, all as represented in Fig. 1 of the drawings, which shows a partof a walk, including the stone or wood border H along one edge of it.

In using these edging and joint plates a very shallow sand or cinder bedor foundation, I, is required-say not exceeding two inches inthicknessto give firm support to the hardened cement blocks G on soft orspongy soils. It will be noticed that the lower parts, b (l, of theouter joint-plates, B D, may be diverged more or less from the loweredges of the center plates, 0, and whereby a tapering form is given tothe lower parts of the cement blocks, allowing the hardened blocks to beeasily taken up and relaid when required. This divergence of the partsZ) d of the joint-plates may be accomplished by placing wedge-shapedblocks of wood or other suitable substance between the parts I) (Z, orby forcing the joint-plates more or less into the sand or cinder bed Iof the pavement as the plates are laid edgewise thereon. This divergenceof the parts I) d of the plates causes the hardened cement blocks tolook over the lower parts of thejoint-plates, and, as the cement isfilled into the molds F to the tops of the center piece, 0, of theplates, the cement also locks over the top edges, b d, of the parts B Dof the plates; hence the jointplates cannot rise between the cementblocks.

The paper-board of which the joint-plates are made absorbs water ormoisture from the ICO liquid cement or the concrete filled into themolds; hence a trowel may be very easily and quickly run along thejoints of the blocks to give them an edge-finish at the surface of thewalk or pavement without the inconvenience and delays attending theapplication of water to the joints in finishing them, and thisabsorption and holding of the moisture of the ocment of the joint-platesis also beneficial to the walk while the concrete blocks are drying outor hardening.

with like good results, in producing with the.

cement or concrete a very cheap, easily-laid,

. and most satisfactory block pavement, es-

pecially adapted for walks in private grounds or for public highways.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. Edging and joint plates for concretepave ments, made with two lower lips or parts, and said lips beingadapted for divergence and to be overlooked by concrete filled in moldsformed by the plates, substantially as herein set forth.

- 2. Edging and joint plates for concrete pavements, made withshoulders, as b d, below their upper edges, over which shoulders theconcrete can loclgwh-ile the upper face of the concrete finishes aboutflush with tops of the joint-plates, substantially as herein set forth.

3. Edging and joint plates for concrete pavements, made with two lowerlips or parts, and said plates provided also with shoulders below theirtop edges, over'which lips and on which shoulders the concreteoverlooks, substantially as herein set forth. 1 4:. Edging and jointplates for concrete pavements, made of three strips, B O D, ofpasteboard or other flexible material, and arranged to provide lowerdivergent lips, I) d, and upper shoulders, b d, substantially as hereinset forth.

5..lhe'combination, with intersecting edging and joint plates ofconcrete pavements, of clips E, formed of wires passed through one plateand twisted at the edge thereof, and then passed through the other plateand bent or clinched at the back thereof, substantially as herein setforth.

6. A concrete pavement formed of intersecting edges and joint-plates AA, having divergent lower parts, I) d, and upper shoulders, I) d,

. and concrete filled into molds formed by the intersecting joint-plates,substantially as'herein set forth.

7. A concretepavement formed of a bed, I, x

and connected edging and joint plates A A, having divergent bases b dresting on or in the bed I, and also having shoulders bd' and con.-crete filled into molds formed by the intersecting plates A A and thebed I, substantially as herein set forth.

JOHN C. HOYT.

WVitnesses:

W. W. CAMPBELL, P. B. Woons.

